31 SE EVERETT MALL WAY 2025-07-25

effectiveness of the stormwater pollutant The cartridges are connected to the under- removal. drain manifold with a plastic connector. Since some media used is potentially = W « r. buoyant, a threaded connector affixed to the under-drain manifold (with glue or other adhesive) is necessary to ensure that the Nit c ` cartridge isn't lifted out of place. For the • heavier compost media, a slip connector is f used. ,41 The StormFilter is also equipped with flow� ' spreaders that trap floating debris and surface films, even during overflow conditions. Depending on individual site characteristics, some systems are equipped with high and/or base flow bypasses. High flow bypasses are installed when the Figure 1. The StormFilter Cartridge calculated peak storm event generates a flow that overcomes the overflow capacity of Priming System Function the system. This is especially important for precast systems. Base flow bypasses are When stormwater in the StormFilter unit sometimes installed to bypass continuous enters a StormFilter cartridge, it percolates inflows caused by ground water seepage, horizontally through the cartridge's filter which usually do not require treatment. All media and collects in the center tube of the StormFilter units are designed with an cartridge, where the float in the cartridge is overflow. The overflow operates when the in a closed (downward) position. inflow rate is greater than the treatment capacity of the filter cartridges. Water continues to pass through the filter media and into the cartridge's center tube. The air in the cartridge is displaced by the water and purged from beneath the filter hood through the one-way check valve located in the cap. Once the center tube is filled with water (approximately 18 inches deep), there is enough buoyant force on the float to open the float valve and allow the treated water in the center tube to flow into the under-drain manifold. This causes the check valve to close, initiating a siphon that draws polluted water throughout the full surface area and volume of the filter. Thus, the entire filter cartridge is used to filter water throughout the duration of the storm, regardless of the water surface elevation in the unit. This siphon continues until the water surface elevation drops to the elevation of the hood's scrubbing regulators. www.stormwater360.com Toll-free:800.548.4667 2 of 9 ©2005 Stormwater360 Vault,CIP and Linear StormFilter Operation and Maintenance Guidelines